Accession Number:

ADA604104

Title:

Integrated Field-Screening for Rapid Sediment Characterization

Descriptive Note:

Corporate Author:

SPACE AND NAVAL WARFARE SYSTEMS CENTER SAN DIEGO CA

Personal Author(s):

Report Date:

2000-09-30

Pagination or Media Count:

123.0

Abstract:

The Environmental Security Technology Certification Program ESTCP has an established program to accelerate acceptance and application of innovative monitoring and site characterization technologies that improve the way the nation manages its environmental problems. Space and Naval Warfare Systems Center, San Diego SSC San Diego, will demonstrate an integrated methodology to facilitate acceptance of three field screening techniques to delineate chemical concentrations and potential biological effects of sediment contaminants. Defining the nature and extent of contamination in marine sediments can be a difficult problem. Detailed site investigations require extensive sampling and subsequent laboratory analyses for both metal and organic contaminant chemistries. Additional laboratory analyses including several different types of bioassays are conducted to determine any possible adverse biological effects to organisms exposed to the sediment. Samples are often collected without any a priori knowledge of the nature and extent of contamination. Due to the high cost of all these laboratory analyses, samples taken for analysis are often limited. Zones of contamination in marine sediments can be missed, or, if located, over- or under-estimated. For more detailed spatial information on extent of contamination, sites of interest must often be sampled and analyzed in an iterative manner. This approach can be prohibitively costly, slow and labor-intensive. An alternative to this approach is to combine standard laboratory analyses with field screening using a number of techniques to characterize both the contaminant chemistry and any possible biological effects. By utilizing near real-time screening techniques during the sampling procedure, the full extent of contamination and any possible biological effects can be rapidly mapped.

Subject Categories:

  • Physical Chemistry
  • Hydrology, Limnology and Potamology
  • Atomic and Molecular Physics and Spectroscopy
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE